“Among women over forty who are able to have children, 29% are “traditionalists” who have at least three children and are employed very little or not at all, while 18% are “postmodernists” who are completely devoted to their careers with no children. Between these extremes lie the “neo-traditionalists” (35%), who put their career second to family and have, on average, two children, and the “modernists” (17%), who have only
one child and commit a considerable amount of their time to the workplace.” — “Keeping Women in Business (and Family)” by Robin Fretwell Wilson.

I didn’t see a parallel statistical snapshot for men in the paper. But Wilson says what many of us know that dads are more likely to stay in the workforce.

“Among persons who graduated from college in 1992–93, mothers were far more likely to leave the workforce or work part-time than fathers. A decade after graduating, 23% of mothers had left the workforce, while another 17% worked part-time. Less than 2% of fathers did either.” — Robin Fretwell Wilson.